What is the air quality trend in Phra Nakhon Si Ayutthaya?

Over the past 14 days, Phra Nakhon Si Ayutthaya had an average AQI of 94 based on station measurements. The worst day was with AQI .

How is Phra Nakhon Si Ayutthaya air quality measured?

Air quality in Phra Nakhon Si Ayutthaya is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Phra Nakhon Si Ayutthaya, Thailand

Name: Phra Nakhon Si Ayutthaya Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Phra Nakhon Si Ayutthaya, Thailand.

152

Current AQI
Unhealthy

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

256h · 48 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-11	124	91–152	45.1 µg/m³	52.4	8h	48
2026-04-10	94	78–113	32.3 µg/m³	37.3	24h	48
2026-04-09	96	86–158	34.0 µg/m³	38.9	16h	49
2026-04-08	112	10–141	40.5 µg/m³	49.5	11h	43
2026-04-07	117	98–148	42.2 µg/m³	50.3	24h	53
2026-04-06	102	15–119	36.3 µg/m³	43.7	18h	46
2026-04-04	107	99–112	37.9 µg/m³	45.3	15h	50
2026-04-03	93	63–105	32.2 µg/m³	38.4	24h	48
2026-04-02	84	56–101	27.7 µg/m³	32.0	21h	47
2026-04-01	86	53–113	28.5 µg/m³	36.9	22h	39
2026-03-31	75	48–154	23.7 µg/m³	29.5	21h	23
2026-03-30	69	33–115	21.6 µg/m³	27.5	13h	28
2026-03-29	81	72–94	26.6 µg/m³	30.0	23h	55
2026-03-28	83	10–97	28.1 µg/m³	33.8	16h	46

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